The Kansas Department of Health and Environment, which reported one new measles case in the past week, now has a possible link to the Texas outbreak.

State health officials worry that declining vaccination rates have left many communities vulnerable nationwide.

Already, the U.S. has more measles cases this year than in all of 2024, the U.S. Centers for Disease Control and Prevention has said. Other states with outbreaks — defined as three or more cases — include New Mexico, Kansas, Ohio and Oklahoma. Since February, two unvaccinated people have died from measles-related causes.